Finding the Fourth Proportional to 101,441, 139,989.06 and 56,729

Step by Step Solution

1. Step 1: Write the proportion equation
   101,441 : 139,989.06 = 56,729 : x
2. Step 2: Convert to fraction form
   101,441/139,989.06 = 56,729/x
3. Step 3: Cross multiply
   101,441x = 139,989.06 × 56,729
4. Step 4: Simplify right side
   101,441x = 7,941,439,384.74
5. Step 5: Solve for x
   x = 7,941,439,384.74/101,441
6. Step 6: Final answer
   x = 78,286.29